(Always unencrypted, must be third field in message) Defines message type. ALWAYS THIRD FIELD IN MESSAGE. (Always unencrypted). Note: A "U" as the first character in the MsgType field (i.e. U1, U2, etc) indicates that the message format is privately defined between the sender and receiver.

Indicates application version using a service pack identifier. The ApplVerID applies to a specific message occurrence. Specifies the service pack release being applied at message level. Enumerated field with values assigned at time of service pack release

Trading partner company ID used when sending messages via a third party (Can be embedded within encrypted data section.) Assigned value used to identify firm originating message if the message was delivered by a third party i.e. the third party firm identifier would be delivered in the SenderCompID field and the firm originating the message in this field.

Trading partner company ID used when sending messages via a third party (Can be embedded within encrypted data section.) Assigned value used to identify the firm targeted to receive the message if the message is delivered by a third party i.e. the third party firm identifier would be delivered in the TargetCompID (56) field and the ultimate receiver firm ID in this field.

"ADMIN" reserved for administrative messages not intended for a specific user. (Can be embedded within encrypted data section.) Assigned value used to identify specific individual or unit intended to receive message. "ADMIN" reserved for administrative messages not intended for a specific user.

Trading partner SubID used when delivering messages via a third party. (Can be embedded within encrypted data section.) Assigned value used to identify specific message originator (i.e. trader) if the message was delivered by a third party

Trading partner SubID used when delivering messages via a third party. (Can be embedded within encrypted data section.) Assigned value used to identify specific message recipient (i.e. trader) if the message is delivered by a third party

Always required for retransmitted messages, whether prompted by the sending system or as the result of a resend request. (Can be embedded within encrypted data section.) Indicates possible retransmission of message with this sequence number

Required when message may be duplicate of another message sent under a different sequence number. (Can be embedded within encrypted data section.) Indicates that message may contain information that has been sent under another sequence number.

Required for message resent as a result of a ResendRequest. If data is not available set to same value as SendingTime (Can be embedded within encrypted data section.) Original time of message transmission (always expressed in UTC (Universal Time Coordinated, also known as "GMT") when transmitting orders as the result of a resend request.

Type of message encoding (non-ASCII characters) used in a message's "Encoded" fields. Required if any "Encoding" fields are used. Type of message encoding (non-ASCII (non-English) characters) used in a message's "Encoded" fields.

The last MsgSeqNum value received by the FIX engine and processed by downstream application, such as trading system or order routing system. Can be specified on every message sent. Useful for detecting a backlog with a counterparty. The last MsgSeqNum (34) value received by the FIX engine and processed by downstream application, such as trading engine or order routing system. Can be specified on every message sent. Useful for detecting a backlog with a counterparty.

Assigned value used to identify the third party firm which delivered a specific message either from the firm which originated the message or from another third party (if multiple "hops" are performed). It is recommended that this value be the SenderCompID (49) of the third party. Applicable when messages are communicated/re-distributed via third parties which function as service bureaus or "hubs". Only applicable if OnBehalfOfCompID (115) is being used.

Time that HopCompID (628) sent the message. It is recommended that this value be the SendingTime (52) of the message sent by the third party. Applicable when messages are communicated/re-distributed via third parties which function as service bureaus or "hubs". Only applicable if OnBehalfOfCompID (115) is being used.

Reference identifier assigned by HopCompID (628) associated with the message sent. It is recommended that this value be the MsgSeqNum (34) of the message sent by the third party. Applicable when messages are communicated/re-distributed via third parties which function as service bureaus or "hubs". Only applicable if OnBehalfOfCompID (115) is being used.

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